1968 Topps #517 Diego Segui
About Diego Segui
Segui's 1968 Topps card, #517, landed in the set's sixth series. It is his first card as an Oakland Athletic, from the franchise's first year on the West Coast after a 13-year stay in Kansas City. Washington had traded him back to the A's for Jim Duckworth on July 30, 1966, and he finished that season in the minors before returning to the majors in 1967 as a bullpen man, with three starts in 36 games. In 1968 he made none at all, pitching 52 games entirely in relief for a 6-5 record, six saves and a 2.39 ERA as Oakland put together its first winning season since 1952.
Diego Segui, a right-handed forkball specialist born in Holguin, Cuba, pitched in the majors from 1962 to 1977 for the Kansas City and Oakland Athletics, Washington Senators, Seattle Pilots, St. Louis Cardinals, Boston Red Sox, and Seattle Mariners. Signed by Cincinnati in 1958 and released that April, he was sold to the Athletics by Tucson in September and worked up their farm system before debuting on April 12, 1962. He finished 92-111 with a 3.81 ERA, 71 saves and 1,298 strikeouts, and led the American League with a 2.56 ERA for Oakland in 1970. His only World Series work came in relief for Boston in Game Five of 1975, a series Cincinnati won in seven games. He is the only man to play for both Seattle franchises, pitching in relief in the Pilots' first game in 1969 and taking the loss in the Mariners' first game on April 6, 1977, the start that earned him the name 'the Ancient Mariner.' He later pitched a decade in the Mexican League and still holds the Venezuelan winter league career strikeout record, which brought him induction into the Venezuelan Baseball Hall of Fame in 2003. His son David Segui also reached the majors. Segui died in 2025 at 87.
Sources: SABR BioProject · Baseball-Reference · Baseball Almanac (1) · Baseball Almanac (2)
Graded population (PSA & SGC)
| Grader | Total | 10 | 9 | 8 | 7 | 6 | 5 | 1-4 | Auth |
|---|---|---|---|---|---|---|---|---|---|
| PSA | 281 | 30 | 117 | 99 | 24 | 5 | 5 | 1 | 0 |
| SGC | 17 | 1 | 6 | 5 | 3 | 1 | 0 | 1 | 0 |
Graded population — a scarcity guide, not a price. Data as of 2026-09-04. Half grades fold down for both graders (8.5→8); PSA qualified slabs (OC, ST, PD, MC and the like) are not counted. Slabs of the yellow team-letter #49 and #66 are 1968 Milton Bradley game cards and are not counted here.
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Related cards
Team card: #554 Oakland Athletics
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- #62 Chuck Dobson
- #79 Ted Kubiak
- #109 Bert Campaneris
- #127 Paul Lindblad
- #146 Sal Bando
- #164 Ramon Webster
- #183 Bob Kennedy
- #199 A's 1968 Rookie Stars
- #224 Jack Aker
- #244 John Donaldson
- #261 Dave Duncan
- #282 Rick Monday
Frequently asked questions
What is the 1968 Topps #517 card?
It is card #517 of the 598-card 1968 Topps Baseball set, picturing Diego Segui of the Oakland Athletics.
Is 1968 Topps #517 a scarce card?
It is from the sixth print series (cards 458-533). Together with series 7 it forms the #458-598 block that hobby sources price at a modest premium; several catalogs call these cards high numbers outright.
How many cards are in the 1968 Topps Baseball set?
598 cards, tracked as 606 collectible states. The numbers run from 1 to 598 without a gap and no printed number carries two different cards; eight cards - six of the seven checklists, #10 AL Pitching Leaders and #400 Mike McCormick - carry a catalogued print variation that the master set counts separately.
Sources: Trading Card Database, PSA CardFacts, Cardboard Connection, BaseballCardPedia, Baseball Almanac, Beckett, Baseball-Reference, the SABR BioProject and the National Baseball Hall of Fame, PSA & SGC population reports. Card data compiled and maintained by T206Cards.com. Page last updated 2026-10-12.